Mean Girls Caesar Speech:(Duh)
As you clearly stated in class, the speech made here clearly parallels the ideas in Julius Caesar, where Brutus was justifying killing Caesar.

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Aladdin
In Aladdin, when Genie is looking through his book of magical awesomeness, he goes through a bunch of things coming out of the book, one of which is Caesar.

Big Bang Theory
Sheldon has often quoted Caesar, going so far as to say "let slip the dogs of war", as well as "Great Caesar's ghost!"